Effect of Calcination Temperature on the Synthesis of ZrO&lt;sub&gt;2&lt;/sub&gt;-Pillared Saponite to Catalytic Activity in Menthol Esterification

Fatimah, Is; Rubiyanto, Dwiarso; Kartika, Nanda Candra

doi:10.22146/ijc.21170

Cited by 8 publications

(5 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Supports present a similar NH 3 desorption profile, but the calcined one presents a little bit more acidity than the fresh one. Some authors explain that this slight difference between the two supports is probably due to the presence of zirconium sites acting as Lewis acid sites besides the formation of H + as a Bronsted acid from the calcination processes 51 and/or due to the change of the ZrO 2 phase. 52 The acidity of the ZrO 2 is slightly changed when the fraction of the tetragonal phase is increased, 53 and this phase change occurs when the calcination temperature is maintained at 450 °C during different times.…”

Section: Methodsmentioning

confidence: 99%

Hydrogenolysis of 5-Hydroxymethylfurfural To Produce 2,5-Dimethylfuran over ZrO₂ Supported Cu and RuCu Catalysts

Requies

Frias

Cuezva

et al. 2018

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

Glucose dehydration to HMF and its hydrogenolysis to DMF, a suitable biofuel, have been studied using the same catalysts for both processes. The 10CuZr catalyst shows the highest HMF yield (25.6%) with an acceptable glucose conversion (75.8%) after 1.5 h on stream. By increasing the time on stream from 1.5 to 5.5 h the HMF yield (33.2%) and glucose conversion (94.5%) are improved. In the case of DMF production, the 15CuZr catalyst shows the highest DMF yield (30%). This behavior is notably improved when Ru is added to the 15CuZr catalyst, reaching a DMF yield of 45.6%. These activity results could be related to the higher amount of Cu0 species exposed on the catalyst surface and the increase of coke resistance. Finally, the 1Ru15CuZr catalyst is used in DMF production using glucose derived HMF as raw material, and a DMF yield and HMF conversion of 16.4% and 77.5% are achieved, respectively.

show abstract

Section: Methodsmentioning

confidence: 99%

Hydrogenolysis of 5-Hydroxymethylfurfural To Produce 2,5-Dimethylfuran over ZrO₂ Supported Cu and RuCu Catalysts

Requies

Frias

Cuezva

et al. 2018

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

show abstract

“…In the few last decades, the raised of utilized from the photocatalysts and nanocatalysts was regarded as versatile materials such as produced of solar cells [1][2], decolorized and degradation of organic compounds [3][4][5][6][7][8] used as biosensor [9][10], synthesis some organic compounds in certain reactions [11], using as anticancer and antitumor [12][13], and using in SPF solar emulsions as sunscreen [14][15].…”

Section: ■ Introductionmentioning

confidence: 99%

Incorporation CdS with ZnS as Composite and Using in Photo-Decolorization of Congo Red Dye

Fakhri

Ahmed

2019

Indones. J. Chem.

View full text Add to dashboard Cite

The aim of this manuscript was to modify the ZnS surface by incorporating with CdS photocatalyst. This manner led to depressing the recombination process and increasing the activity. The X-ray Powder Diffraction (XRD) data were proved that the CdS incorporated with ZnS and formed ZnS-CdS nanocomposite by observing new peaks at 26.92, 28.62, 30.52, and 47.26°. Based on the Atomic Force Microscopy (AFM) analysis and Tauc equation, the particle sizes for all samples were raised with decreased the band gap values. The activation energy for decolorization of Congo red with the using ZnS is found to be more than that value for the using prepared ZnS-CdS composite. The percentage of efficiency was found to be increased with modified the ZnS surface.

show abstract

“…The commercial zirconia was used as control. All samples indicate three diffraction peaks at 2θ value of about 28°, 31°, and 50° which can be indexed as (11-1), (111) and (122) reflection planes of monoclinic crystal phase of zirconia (JCPDS 37-1484), respectively [24]. Acid treatment on zirconia surprisingly exhibited higher crystallinity, as shown that the peaks intensity of the sulfated zirconia diffraction was increased, compared to the commercial zirconia.…”

Section: Resultsmentioning

confidence: 88%

Effect of Promoters and Calcination Temperature on Surface and Acidity of Modified Zirconia

Amin

Trisunaryanti

2019

JNanoR

View full text Add to dashboard Cite

The effect of sulfating agent concentration, calcination temperature, and Ni incorporation on commercial zirconia have been evaluated. Sulfation of commercial zirconia was prepared by wet impregnation with different amounts of sulfuric acid (0.2, 0.5 and 0.8 M) then calcined at 400, 500, 600, 700, 800 and 900°C for 4 h. Ni was incorporated by refluxing over sulfated zirconia, followed by calcination-reduction process. All samples were characterized by XRD, FTIR, ammonia sorption, SEM-EDX, TEM, and AAS. The presence of sulfate has been added to acidic strength of the sulfated zirconia, the more sulfuric acid were used the stronger the acidic property. There has been degradation of sulfate groups that was adrift in sulfated zirconia by calcination treatment above 600°C. The best physicochemical properties of sulfated zirconia were modification with 0.8 M sulfuric acid and on calcination at 400°C. The 0.8SZ-400 has exhibited the highest Brønsted acidic sites with total acidity of 1.71 mmol/g. The impregnation of Ni enhanced the Lewis acidic sites on the surface of the 0.8SZ-400 which NiSZ gave 2.71 mmol/g of total acidity. All prepared materials consisted of nearly spherical shape of nanocrystal with mostly aggregated particles.

show abstract

Effect of Calcination Temperature on the Synthesis of ZrO<sub>2</sub>-Pillared Saponite to Catalytic Activity in Menthol Esterification

Abstract: The influence of calcination temperature on the synthesis of zirconia-pillared saponite (PILS)

Cited by 8 publications

References 13 publications

Hydrogenolysis of 5-Hydroxymethylfurfural To Produce 2,5-Dimethylfuran over ZrO₂ Supported Cu and RuCu Catalysts

Hydrogenolysis of 5-Hydroxymethylfurfural To Produce 2,5-Dimethylfuran over ZrO₂ Supported Cu and RuCu Catalysts

Incorporation CdS with ZnS as Composite and Using in Photo-Decolorization of Congo Red Dye

Effect of Promoters and Calcination Temperature on Surface and Acidity of Modified Zirconia

Contact Info

Product

Resources

About

Effect of Calcination Temperature on the Synthesis of ZrO<sub>2</sub>-Pillared Saponite to Catalytic Activity in Menthol Esterification

Abstract: The influence of calcination temperature on the synthesis of zirconia-pillared saponite (PILS)

Cited by 8 publications

References 13 publications

Hydrogenolysis of 5-Hydroxymethylfurfural To Produce 2,5-Dimethylfuran over ZrO2 Supported Cu and RuCu Catalysts

Hydrogenolysis of 5-Hydroxymethylfurfural To Produce 2,5-Dimethylfuran over ZrO2 Supported Cu and RuCu Catalysts

Incorporation CdS with ZnS as Composite and Using in Photo-Decolorization of Congo Red Dye

Effect of Promoters and Calcination Temperature on Surface and Acidity of Modified Zirconia

Contact Info

Product

Resources

About

Hydrogenolysis of 5-Hydroxymethylfurfural To Produce 2,5-Dimethylfuran over ZrO₂ Supported Cu and RuCu Catalysts

Hydrogenolysis of 5-Hydroxymethylfurfural To Produce 2,5-Dimethylfuran over ZrO₂ Supported Cu and RuCu Catalysts